Unipolar generator.



PATENTED JULY 9, 1907.

THOMSON. E'i'L iIPGLAE GENERATOR.

ION FILED SEPT. 28, 1905.

2 SHEETS-SHEET l.

Invent 0 'r Elihu Thoon UNIPPLAE .JLPFYLZ'JARTION FILED SEPT,

Witnesses QMM/MQ. %&W W

PATEIJE'TED SUIT? Inventor E: ii huTh omson UNI STATL ELIHU THOMSON, OFSWAltlPSUOTl,

.(JOMPANY, A

Application filed September 28,1905.

tors, 01' which the iollowingis it specification.

machine. i

My inventionrelates to dynamo-electric ins. ol the unipolar type, andits object is to i regulation of such machines. In this type 0 tor eachitl'lllzttc conductor is sepni tely to collector rings, and the severalconduclo in series with each other by inc-ens ol' bills on the collectorrings and conncc =ons lPQiLW en 1 opposite ends of the machine. The cuitconseque, hides a large number 0..

sh Contact esistance able. nnic drop at the bri co; terms a large oi thefull-load vo tage (i101) Fiit'hei'niore the ei'nsl resistance-is WhatVariable unstable. 1e held.

'- tor connected across the 111- L nienne' the ohznic contacts as theload increases result the voltage impressed upon the field .irs to a,certain e1;

tion oi the me.

My invention consists in sup ing from auxiliary b' 'ushes ndeo turecircuit. l fig through the ".e is unallectw a? cuit due to brush 0 theo" in the armature .hee. 'lhe auxil' This con gle conductor. conductorsconnected which my invention is applic zine. s. no development on eelztne surface of t..e me con- .nections.

ductor and co in the drawing represents the field which is arranged toproduce unipolar central portion, and is provided with 1:. coils f.

A represents the armature carrying; phn

conductors a within the unipolai" field. Tll 356011- MASSi'iUHUSETTS,ASSIGNOR 'lG GENERAL ELECT CORPORATION OF NEW YORK.

ted July 9 3 Fieriul 1%. 280,5 Z6

"-105 bearing on the collector re conductors may l e co; We;-

ther and to the cm. at oyeestte encs me e and Whicl AltQil. States, is,-

machine, i unlpolo ing. an armature, e. plural Lure conductors eech conected 111, its 01 collector colle lli 0113511105 and conne connecting:it plurality oi armature conductors and ou;;11in1;7 brushes eon ccted tothe field win 2, In a dynamo-electric machine, munipolar. fieldstructure, 21 held winding, an armature, a plurality of armatureconductors each connected at its opposite ends to collector rings,collecting brushes and connections for connecting a plurality ofarmature conductors in series, and a pair of auxiliary brushes connectedto the field winding and hearing on" rings connected to opposite ends ofone armature conductor. 1

3. In :1 dyuam0-electric machine, a unipolar field structure, a fieldwinding, an armature, a plurality of armature conductors each connectedat its opposite ends to collector rings. one of said conductors being ofgreater crosssection than the others, collecting brushes and connections for connecting the armature conductors in series, and a pair ofauxiliary brushes connected to the field winding and bearing; on ringsconnected to the armature conductor of greatest cross-section.

1. in a dynamoclectric machine, a unipolar field structure, a fieldwinding, an armature, a plurality of broad flat conductors eachconnected at its opposite ends to col lcctor rings and one of saidconductors being of greater width than the others, collecting brushesand connections for connecting the armature conductors in series, and apair of auxiliary brushes connected to the field winding and bearing onrings connected to the widest armature conductor.

5. In a unipolar machine, a pair of collecting brushes independent ofthe brushes carrying the main armature current connected to the fieldwinding and bearing onn pair of collector rings connected to oppositeends of a single armature conductor.

1;. In a unipolar machine, an armature provided with a plurality ofconductors and collector rings and collecting brushes, and a fieldwinding, provided with and supplied through auxiliary brushesindependent of the brushes carrying the main armature current andbearing on a pair of collector rings connected at opposite ends to asingle armature conductor.

in witness whereof I have hereunto set my hand this twenty-fifth day ofSeptember, 1905.

